OCR Text |
Show 1882.] REV. O. P. CAMBRIDGE ON NEW ARANEIDEA. 429 orange-yellow colour, excepting a large black central spot on the sternum. The sides of the thorax are considerably rounded, and the normal indentations marking off the caput from the thorax are strongly marked. Along the median line of the caput are several bristly hairs directed forwards. The eyes are very unequal in size for this family; those of the fore central pair are much the larger, and form a line longer than those of the hind central pair, and have their visual axis directed forwards and outwards; these last are rather wider apart than each is from the hind lateral on its side. The palpi are short, the cubital and radial joints exceedingly so. The digital joint is large, and of an abnormal form, somewhat rounded at its base; it has its fore extremity considerably produced into a rather narrow and tapering form ; its extremity is furcate, one point of the furcation being longer than the other. The palpal organs are rather complex and highly developed; connected with them is a tortuous, somewhat convoluted, pale-yellowish tapering spine of immense length ; and its long slender filiform point extends very prominently outwards. One corneous process of the palpal organs is long, prominent, and tapering, and has its extremity, which projects outwards, notched. The abdomen is of a pale-yellowish luteous hue, thinly clothed with hairs; its upper posterior extremity has a large black spot, on each side of which below (towards the spinners) is another; two others are placed (one on each side) towards the fore part of the upperside; and a sixth is underneath, just in front of tbe spinners. The spinners are very short and compact. A single example of this remarkably distinct species was contained in Mr. Traill's Amazon collection. CHRYSSO, g. n. Cephalothorax much like that of Theridion, small, somewhat depressed, short-oval in form, with very slight lateral marginal constriction at caput. Eyes as in Theridion. Legs moderately long, slender, 1, 4, 2, 3, furnished with hairs only. Falces small, not very strong, straight and vertical. Maxilla of moderate size, pointed at their inner extremities, and inclined towards the labium, which is short and of a somewhat semicircular form. Abdomen large, the posterior extremity (particularly in the female) produced into a long and tapering continuation, varying, however, in its length in different individuals. This genus is nearly allied to Argyrodes, appearing to form a eonnecting link between it and Theridion. CHRYSSO ALBOMACULATA, sp. n. (Plate XXX. fig. 6.) Adult male, length 1| line ; female, 2\ lines. The whole of the fore part of this pretty little Spider is of an orange- |